updated 08:00 pm EST, Tue November 22, 2011

Name-your-own-price, DRM-free games

Days after the completion of the last Humble Bundle offer, developer Jeffrey Rosen has launched a new promotion, dubbed the Humble Introversion Bundle. As with previous offers, buyers set their own price for the bundle, which this time includes four games from Introversion (with an option to get two more games). All games work natively on all major platforms (Mac, Windows, Linux) and are DRM-free. The money raised is split according to the buyers' wishes.

The games in the latest bundle include Darwinia, a real-time strategy game that won the IGF grand prize in 2006 and has been a popular hit on Steam ever since. The sequel, the multi-player Multiwinia, is also included.

Buyers also receive two Windows-only bonus prototypes: the first is a city generator for Introversion's upcoming game Subversion City, while the other is a Voxel-based destruction engine that may be used in future products. The money raised goes to support two charities, the Electronic Frontier Foundation and Child's Play, the latter a group that provides game consoles and other electronic devices to children in hospitals.

Buyers choose a donation level, then move sliders to split the money between developers, the charities and a possible "tip" to the Humble Bundle organizers. The average purchase price has been $3.71, with a few high-profile names giving more (such as former Star Trek TNG actor Wil Wheaton, who donated $100). On average, Mac and Linux users donate more than Windows users, with Linux users being the most generous by more than twice the average donated by Windows users.

The bundle offer will run for another 13 days. The full Humble Indie Bundle (the fourth edition) is teased as coming soon, and buyers can sign up to be notified when that occurs.